Hey guys, new to the site. I have an 02 C5 Z06 with an APS twin turbo kit. Car has been fine since I've owned it. Took it to the Dyno yesterday for a tune and started doing a couple pulls, we did about 4 pulls and it ran fine started the 5th pull and all of a sudden the Charge System Fault error came on and battery voltage started dropping. Put a new alternator and battery in the next day, took it for a drive and its still dropping to about 11 Volts until I shut her off. Was reading up on it and saw it could be the starter solenoid but wanted to get your advice first. Thanks for the help!

 

Welcome to the forum.

Is there any current draw on the battery w/ the car off?